The Mid-Atlantic Door Group, Inc., distributors of Overhead Door Corporation products, started in 1973 and now consists of eight office and warehouse locations which have been strategically placed to properly service our markets in Maryland, Washington, D.C., Virginia, and Pennsylvania. 👀 Always look for the Red Ribbon! 📍 Harrisburg, PA 📍 Hanover, PA 📍 Frederick, MD 📍 Prince Frederick, MD 📍 Washington, DC 📍 Manassas, VA 📍 Fredericksburg, VA 📍 Richmond, VA